Question

What does the local defence system include?

Options

• Protective mechanical barriers, expulsion of harmful agents, germ-killing secretions, and germ-fighting white blood cells

• Only antibody production and antigen recognition

• Only mucous membrane production

• Memory cell formation and lymphocyte differentiation

Answer 1

The local defence system includes protective mechanical barriers, expulsion of harmful agents, germ-killing secretions, and germ-fighting white blood cells. These components work together at possible entry points to prevent the entry of harmful organisms into the body.